1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package main
import (
"context"
"encoding/json"
"flag"
"fmt"
"log"
"net"
"net/http/httptest"
"net/netip"
"os"
"path/filepath"
"strings"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"tailscale.com/ipn/store/mem"
"tailscale.com/net/netns"
"tailscale.com/tailcfg"
"tailscale.com/tsnet"
"tailscale.com/tstest/integration"
"tailscale.com/tstest/integration/testcontrol"
"tailscale.com/tstest/nettest"
"tailscale.com/types/appctype"
"tailscale.com/types/ipproto"
"tailscale.com/types/key"
"tailscale.com/types/logger"
)
func TestPortForwardingArguments(t *testing.T) {
tests := []struct {
in string
wanterr string
want *portForward
}{
{"", "", nil},
{"bad port specifier", "cannot parse", nil},
{"tcp/xyz/example.com", "bad forwarding port", nil},
{"tcp//example.com", "bad forwarding port", nil},
{"tcp/2112/", "bad destination", nil},
{"udp/53/example.com", "unsupported forwarding protocol", nil},
{"tcp/22/github.com", "", &portForward{Proto: "tcp", Port: 22, Destination: "github.com"}},
}
for _, tt := range tests {
got, goterr := parseForward(tt.in)
if tt.wanterr != "" {
if !strings.Contains(goterr.Error(), tt.wanterr) {
t.Errorf("f(%q).err = %v; want %v", tt.in, goterr, tt.wanterr)
}
} else if diff := cmp.Diff(got, tt.want); diff != "" {
t.Errorf("Parsed forward (-got, +want):\n%s", diff)
}
}
}
var verboseDERP = flag.Bool("verbose-derp", false, "if set, print DERP and STUN logs")
var verboseNodes = flag.Bool("verbose-nodes", false, "if set, print tsnet.Server logs")
func startControl(t *testing.T) (control *testcontrol.Server, controlURL string) {
// Corp#4520: don't use netns for tests.
netns.SetEnabled(false)
t.Cleanup(func() {
netns.SetEnabled(true)
})
derpLogf := logger.Discard
if *verboseDERP {
derpLogf = t.Logf
}
derpMap := integration.RunDERPAndSTUN(t, derpLogf, "127.0.0.1")
control = &testcontrol.Server{
DERPMap: derpMap,
DNSConfig: &tailcfg.DNSConfig{
Proxied: true,
},
MagicDNSDomain: "tail-scale.ts.net",
}
control.HTTPTestServer = httptest.NewUnstartedServer(control)
control.HTTPTestServer.Start()
t.Cleanup(control.HTTPTestServer.Close)
controlURL = control.HTTPTestServer.URL
t.Logf("testcontrol listening on %s", controlURL)
return control, controlURL
}
func startNode(t *testing.T, ctx context.Context, controlURL, hostname string) (*tsnet.Server, key.NodePublic, netip.Addr) {
t.Helper()
tmp := filepath.Join(t.TempDir(), hostname)
os.MkdirAll(tmp, 0755)
s := &tsnet.Server{
Dir: tmp,
ControlURL: controlURL,
Hostname: hostname,
Store: new(mem.Store),
Ephemeral: true,
}
if *verboseNodes {
s.Logf = log.Printf
}
t.Cleanup(func() { s.Close() })
status, err := s.Up(ctx)
if err != nil {
t.Fatal(err)
}
return s, status.Self.PublicKey, status.TailscaleIPs[0]
}
func TestSNIProxyWithNetmapConfig(t *testing.T) {
nettest.SkipIfNoNetwork(t)
c, controlURL := startControl(t)
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
// Create a listener to proxy connections to.
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
// Start sniproxy
sni, nodeKey, ip := startNode(t, ctx, controlURL, "snitest")
go run(ctx, sni, 0, sni.Hostname, false, 0, "", "")
// Configure the mock coordination server to send down app connector config.
config := &appctype.AppConnectorConfig{
DNAT: map[appctype.ConfigID]appctype.DNATConfig{
"nic_test": {
Addrs: []netip.Addr{ip},
To: []string{"127.0.0.1"},
IP: []tailcfg.ProtoPortRange{
{
Proto: int(ipproto.TCP),
Ports: tailcfg.PortRange{First: uint16(ln.Addr().(*net.TCPAddr).Port), Last: uint16(ln.Addr().(*net.TCPAddr).Port)},
},
},
},
},
}
b, err := json.Marshal(config)
if err != nil {
t.Fatal(err)
}
c.SetNodeCapMap(nodeKey, tailcfg.NodeCapMap{
configCapKey: []tailcfg.RawMessage{tailcfg.RawMessage(b)},
})
// Lets spin up a second node (to represent the client).
client, _, _ := startNode(t, ctx, controlURL, "client")
// Make sure that the sni node has received its config.
l, err := sni.LocalClient()
if err != nil {
t.Fatal(err)
}
gotConfigured := false
for range 100 {
s, err := l.StatusWithoutPeers(ctx)
if err != nil {
t.Fatal(err)
}
if len(s.Self.CapMap) > 0 {
gotConfigured = true
break // we got it
}
time.Sleep(10 * time.Millisecond)
}
if !gotConfigured {
t.Error("sni node never received its configuration from the coordination server!")
}
// Lets make the client open a connection to the sniproxy node, and
// make sure it results in a connection to our test listener.
w, err := client.Dial(ctx, "tcp", fmt.Sprintf("%s:%d", ip, ln.Addr().(*net.TCPAddr).Port))
if err != nil {
t.Fatal(err)
}
defer w.Close()
r, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
r.Close()
}
func TestSNIProxyWithFlagConfig(t *testing.T) {
nettest.SkipIfNoNetwork(t)
_, controlURL := startControl(t)
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
// Create a listener to proxy connections to.
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
// Start sniproxy
sni, _, ip := startNode(t, ctx, controlURL, "snitest")
go run(ctx, sni, 0, sni.Hostname, false, 0, "", fmt.Sprintf("tcp/%d/localhost", ln.Addr().(*net.TCPAddr).Port))
// Lets spin up a second node (to represent the client).
client, _, _ := startNode(t, ctx, controlURL, "client")
// Lets make the client open a connection to the sniproxy node, and
// make sure it results in a connection to our test listener.
w, err := client.Dial(ctx, "tcp", fmt.Sprintf("%s:%d", ip, ln.Addr().(*net.TCPAddr).Port))
if err != nil {
t.Fatal(err)
}
defer w.Close()
r, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
r.Close()
}
|
